Originally Posted by JohnKSa
The short story of handgun incapacitation is that it can't be reliably achieved "with the speed needed in a defense situation" unless the central nervous system is significantly damaged. And there is no handgun/bullet combination that can guarantee that since that's primarily dependent on where the bullet goes (is aimed).
I'm soundly convinced that the difference between 9mm ball and the 'best' 10mm JHP will not compensate for 2 1/2" of lateral dispersion from the centerline of the body.
“Nine-tenths of tactics are certain, and taught in books: but the irrational tenth is like the kingfisher flashing across the pool, and that is the test of generals. It can only be ensured by instinct, sharpened by thought practicing the stroke so often that at the crisis it is as natural as a reflex.” ~ T. E. Lawrence